<template>
  <div class="goodinfo-container">
    <!-- 小球 -->
    <transition
    @before-enter="beforeEnter"
    @enter="enter"
    @after-enter="afterEnter">
      <div class="ball" v-show="ballFlag" ref="ball"></div>
    </transition>
    <!-- 轮播图 -->
    <div class="mui-card">
      <div class="mui-card-content">
        <swiper :lunbotuList="lubotu"></swiper>
      </div>
    </div>
    <!-- 商品购买区域-->
    <div class="mui-card">
      <div class="mui-card-header">{{ goodsinfo.title }}</div>
      <div class="mui-card-content">
        <div class="mui-card-content-inner">
          <p class="price">
            市场价：
            <del>￥{{ goodsinfo.market_price }}</del>&nbsp;&nbsp;销售价：
            <span class="now_price">￥{{ goodsinfo.sell_price }}</span>
          </p>
          <p>购买数量：
            <numbox @getcount="getSelectedCount" :max="goodsinfo.stock_quantity"></numbox>
          </p>
          <mt-button type="primary" size="small">立即购买</mt-button>
          <mt-button type="danger" size="small" @click="addToShopCar">加入购物车</mt-button>
        </div>
      </div>
    </div>
    <!-- 商品参数 -->
    <div class="mui-card">
      <div class="mui-card-header">商品参数</div>
      <div class="mui-card-content">
        <div class="mui-card-content-inner">
          <p>商品货号：{{ goodsinfo.goods_no }}</p>
          <p>库存情况：{{ goodsinfo.stock_quantity }}件</p>
          <p>上架时间：{{ goodsinfo.add_time | dateFormat }}</p>
        </div>
      </div>
      <div class="mui-card-footer">
        <mt-button type="primary" size="large" plain @click="godesc(id)">图文介绍</mt-button>
        <mt-button type="danger" size="large" plain @click="gocomment(id)">商品评论</mt-button>
      </div>
    </div>
  </div>
</template>

<script>
import swiper from "../subcomponents/swiper.vue";
import numbox from "../subcomponents/numbox.vue";

export default {
  data() {
    return {
      lubotu: [
        { img: "../../images/thumb1.jpg" },
        { img: "../../images/thumb2.jpg" },
        { img: "../../images/thumb3.jpg" },
        { img: "../../images/thumb4.jpg" }
      ],
      id:this.$route.params.id,
      goodsinfo:{},
      ballFlag:false,
      selectedCount:1
    };
  },
  created(){
    this.getGoodsInfo();
  },
  methods: {
    getGoodsInfo(){
      this.$http.get('api/goods/getinfo/'+this.id).then(result=>{
        if(result.body.status === 0){
          this.goodsinfo=result.body.message[0];
        }
      })
    },
    godesc(id){
      this.$router.push({name:"goodsdesc",params:{id}});
    },
    gocomment(id){
      this.$router.push({name:"goodscomment",params:{id}});
    },
    addToShopCar() {
      // 添加到购物车
      this.ballFlag = !this.ballFlag;
      var goodsinfo={
        id:this.id,
        count:this.selectedCount,
        price:this.goodsinfo.sell_price,
        selected:true,
        title:this.goodsinfo.title
      }
      this.$store.commit("addToCar",goodsinfo)
    },
    beforeEnter(el) {
      el.style.transform = "translate(0, 0)";
    },
    enter(el, done) {
      el.offsetWidth;
      const ballPosition = this.$refs.ball.getBoundingClientRect();
      // 获取 徽标 在页面中的位置
      const badgePosition = document
        .getElementById("badge")
        .getBoundingClientRect();

      const xDist = badgePosition.left - ballPosition.left;
      const yDist = badgePosition.top - ballPosition.top;
      el.style.transform = `translate(${xDist}px, ${yDist}px)`;
      el.style.transition = "all 0.5s cubic-bezier(.4,-0.3,1,.68)";
      done();
    },
    afterEnter(el) {
      this.ballFlag = !this.ballFlag;
    },
    getSelectedCount(count){
      this.selectedCount=count;
      console.log(this.selectedCount)
    }
  },
  components: {
    swiper,
    numbox
  }
};
</script>

<style lang="scss" scoped>
.goodinfo-container{
    background-color: #eee;
    overflow: hidden;
    .now_price{
      color: red;
      font-size: 16px;
      font-weight: bold;
    }
    .mui-card-footer {
      display: block;
      button {
        margin: 15px 0;
      }
    }
    .ball {
      width: 15px;
      height: 15px;
      border-radius: 50%;
      background-color: red;
      position: absolute;
      z-index: 99;
      top: 390px;
      left: 146px;
    }
}
</style>
